The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2009
Filed:
Sep. 15, 2005
J. Steve Wills, Columbus, IN (US);
J. Steve Wills, Columbus, IN (US);
Cummins, Inc., Columbus, IN (US);
Abstract
An apparatus, system, and method are disclosed for robustly estimating soot oxidation rates on a particulate filter. The invention uses empirically measured soot consumption rates as defined boundary rates, and operates between those rates using theoretical relationships between soot consumption and various operating conditions. The invention may also operate outside the defined boundaries by extrapolating the theoretical relationships beyond the defined boundary. The invention thereby overcomes the inflexibility of empirical modeling by allowing reasonable estimates at points that are not explicitly measured, and it overcomes the sensitivity of theoretical models to non-idealities that are experienced in real applications.